# Introduction

In
the module on probability,
we talked about Laws of Probability that can be applied to, well, just about
anything … rolling dice or determining the probability of survival, or playing
the stock market, or genetics, to name a few. In this module, we're going
to talk about **another approach to probability**, which is much more specific
to genetics, called Punnett Squares. Punnett Squares were invented by one
Reginald Punnett, a British geneticist who also studied ribbon worms and played
cricket with G. H. Hardy of Hardy-Weinberg fame, one of the true big cheeses
in the genetics world.

In this module, you'll see how **Punnett Squares are really just a graphical
way of reproducing the basic rules of probability. **

You'll also see how to predict the phenotypic outcome from a multi-loci genotypic
cross – **in other words, how to predict what the kids will look like.**

Clipart for this module thanks to Arthur's Clipart, FreeImages.co.uk, Clipart Heaven

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